Machine for refitting valves



Patented May 26,1891.

C. P. HALL.

INVENTOR:

MACHINE FOR REFITTI NG VALVES.

(No Model.)

WITNESSES: @KQWW 1 39 UNITED STATES PATENT ()FFIGE.

CHARLES F. HALL, OF SKANEA'IELES, NEW YORK.

MACHINE FOR REFITTING VALVES.

SPECIFICATION forming part of Letters Patent No. 453,001, dated May26,1891.

Application filed December 3, 1890- Serial No. 373,401- (No model.)

To aZZ [Oil U122 it may concern.-

Be it known that I, CHARLES F. HALL, of Skaneateles, in the county ofOnondaga, in the State of New York, have invented new and usefulImprovements in Machines forRefitting Valves, of which the following,taken in connection with the accompanying drawings, is a full, clear,and exact description.

This invention relates to the class of valvefitting machines in which arotary spindle is provided with a dog by which it holds the valve to berefitted and presses said valve between cutters mounted on a face-plateor head. r

Theobject of the invention is to provide a machine which shall affordgreater range of adjustment to operate 011 valves and valveseats ofdifferent diameters, and shall also be simple in construction andconvenient and efficient in its operation; and to that end the inventionconsists in the improved construction and combination of partshereinafter described, and specifically set forth in the claims.

. In the annexed drawings, Figure 1 is a side elevation of a machineembodying my improvements. Fig. 2 is a vertical longitudinal section ofthat end of the machine on which is mounted the cutter-head. Fig. 3 is avertical transverse section on line so 00, Fig. 1. Fig. 4 is a face viewof the cutter-head. Fig. 5 is a detached longitudinal section of amothfication of the dead-spindle of the machine, and Fig. 6 is a faceview of the cutter as used for fitting fiat valve-seats.

Similar letters of reference indicate corresponding parts.

A represents the base of the machine. From one end of said base risesthe pedestal P, which is rigid in its position and preferably formedintegral with said base. The top of said pedestal is formed with a rigidhorizontal sleeve a, in which is inserted movably longitudinally thedead-spindle d, which is secured adjustably in its position by means ofa set-screw e, and preferably, also, by a jam-nut n 011 the rear end ofsaid spindle, which portion is screw-threaded for that purpose.

To the exterior of the sleeve a are rigidly secured forwardly-extendingarms I) b, to the extremities of which is rigidly attached the from thesame by a spiral spring 3 back of the pin, as shown in Fig. 5 of thedrawings, or said pin d may be otherwise adjustably sustained in thespindle cZas, for instance, by screw-threads on the pin working incorresponding serew-threads in the channel of the spindle. (Notnecessary to be shown.)

h h h represent the cutters by which to trim and fit the valve, and foroperating on a globevalve said cutters are formed conical and securedwith their large ends to'the face of the cutter-head C.

' To adapt the machine to operate on valves of dilterent diameters, Iattach the cutters adjustablyin relation to their distances from thecenter of the cutter-head C, and for this purpose I prefer to providesaid cutter-head with a series of bolt-holes i t i for each cutter, saidbolt-holes being arranged at various distances from the center of thecutter-head and adapted to receive through them the attaching-bolte ofthe cutter. The supplemental head C may also be provided with suchbolt-holes as shown in Fig. 4 of the drawings, in which one of thecutters is indicated by dotted lines. For grinding or fitting avalve-seat the cutters h h are to be reversed so as to set them withtheir small ends against the cutter-head. In this latter position thecutters are also placed for operating on a flat valve-seat, such as isrequired for cheek-valves and others, and for which purpose I providethelarge end face of the cutter with cutting-teeth, as shown in Fig. 6of the drawings.

D represents the rotary or live spindle, which is journaled in a sleeveD on the top of the pedestal or post P, which is mounted movably on aguide g, secured to or formed on the base A, and one or moreset-screwstt, passing through the foot of the pedestal and engaging theguide, holds the pedestal in its desired position. Said pedestal canthus be set a greater orless distance from the cutterhead 0, as may berequired to bring the valve to be operated on in proper position againstthe cutters. The end of the live spindle D adjacent to the cutter-headis provided with a suitable dog f for engaging the valve-stem so as tocompel the valve to rotate with the spindle.

For operating on spindle, wing, and check valves the cutters are securedto the main cutter-head O, the supplemental head C being in that caseremoved from the main head to allow the end of the valve to pass throughthe aperture 0 and become centered on the supplemental head, as shown inFigs. 1 and 2 of the drawings.

Fig. 1 also illustrates the method of operating' the machine. The dottedlines represent the valve and its stuffing-box. The valve proper beingof a conical form is insertedbetween the correspondinglyshaped cutters hh h, which have been adjusted on the cuttor-head, so as to come incontact with the beveled sides of the valve disposed concentric with thecutter-h ead O. The dead-spindle d is pushed toward the end of thevalvesteni and centered thereon, while the dog f engages the handle ofthe valve so as to cause the same to turn with the spindle D. Byrotating this spindle and at the same time pushing it toward thecutter-head O the valve is rotated between the cutters and forcedagainst the same with the requisite force to cause the cutters to dressand refit the face of the valve.

For operating on small valves the deadspindle d is pushed toward themain head 0 to seat the supplemental head 0' in the-aperture c, where itis retained by fastening the spindle d in the sleeve a. The cutters inthis case are attached to said supplemental head.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is-

1. A valve-fitting machine comprising a rotary spindle, a work-holdingdog on the end of said spindle, a head facing said end of the spindleand secured stationary in its position, and cutters attached to saidhead adj ustably in relation to the center thereof, as set forth.

2 In combination with the rotary spindle and a work-holding dog attachedto the end of said spindle, a head facing said end of the spindle andprovided with a central aperture, cutters rigidly secured to said head,a deadspindle disposed axially concentric with the aforesaid apertureand movable longitudinally to and from the same, and fasteningdevicesholding the latter spindle adj ustably in its position, as set forth.

3. In combination with the rotary spindle provided with a work-holdingdog on its end, a main head facing said end of the spindle and formedwith a central aperture, cutters secured to said head, a dead-spindledisposed axially concentric with the aforesaid aperture and movablelongitudinally to and from the same, a supplemental head of the shapeand size of the aperture in the main head and secured to the end of thesaid spindle adjacent to said main head,-and fasteningdevices holdingsaid latter adj ustably in its position, substantially as described andshown.

4:. The combination, with the base A, of the pedestal P, formed integralwith said base and having the sleeve a affixed to it, arms I) b, rigidlyattached to and extending from said sleeve, the main head 0, secured tosaid arms remote from the sleeve and provided with the central aperturec,'the spindle d, sliding in said sleeve,the supplementalhead 0,attached to said spindle, the set-screw e for fastening the spindle,cutters attached to the main head, and the rotary spindleD, providedwith the work-holding dog f, substantially as described and shown.

5. In a machine for fitting valves, the combination, with thecutter-head, of cutters of conical shape secured reversibly to thecutterhead and provided with teeth on their beveled sides and on theirlarge end faces, substantially as described and shown.

In testimony whereof I have hereunto signed my name this 15th day ofNovember, 1890.

CHARLES F- HALL. [L. s]

Witnesses:

M. F. DILLON, CALEB W. DOVE.

